Reversible engine.



No. 000,300. Patented 000.23, |900.

H. B ...000EN- REVERSIBLE ENGINE. (Applimian mea s011514. 1900.) (nomaden.)

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. 'Ano/Mfrs UNTTED STATES l PATENT EEIGE.

HERMAN BRADNER OGDEN, OF NEW YORK, N. Y.

REVERSIBLE ENGINE.

SPECIFICATION forming* joart of Letters Patent N0. 660,390, dated ctober 23, 1900.

Application led J une 14, 1900.

To @ZZ tuk/mn it may concern.-

Be it known that I, HERMAN BRADNER OG- DEN, a citizen of the United States, and a resident 'of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Reversible Engine, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved reversible engine more especially designed as a multiple-cylinder engine and arranged to utilize the motive agent to the fullest advantage and to permit a convenient reversing whenever desired'.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then point-V ed out in the claims. .1

A practical embodimentof the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the views. i

Figure l is a cross-sectionof the improvement on the line l l in Fig. 2, and Fig: 2 isa longitudinal central sectional elevation ot' the same. v

The improved rotary engineillustrated in Fig. 2 has three cylinders A A A2, arranged within a closed casing B, having outlets Bl for the exhaust ot' the motive agent. The lower ends of the cylindersA A' A2 open into said casing B, and in said cylinders A vA A2 are mounted to reciprocate pistons C C' C2, connected by pitmen D with crank-arms E E E2, standing at angles to each other and secured or formed on the main driving-shaft F, journaled in suitable bearings in the casing B and provided atene outer end with a pulley F for transmitting the motion of the engine to other machinery.

In the top of each cylinder A is formed an inlet-port a, and in the side wall of each cylinder are arranged one or more exhaust-ports b, openinginto the casing B and controlled by the pistons C C C-that is, the exhaust-ports b are opened when the pistons move into a lower-most position and are closed on the return stroke of the pistons. The inlet-ports a open into a valve-chamber G, containing a cylindrical valve H, mounted to turn and to slide longitudinally in said chamber, said sei-nino. 20,273. (No man.;

valve H having sets of diametrical ports c d,

`adapted to register with the ports t in the several cylinders A A A2. The ports c d in eachset are spaced apart lengthwise of the valve H and stand approximately at a right angle to one another, so that when one port is in register with the port a the other port is out of register with the same. By the operator moving the valve H lengthwise in the chamber G either port c or d can be moved in register with the port a. Diametrically opposite the port ct is arranged a port e in the wall of the valve-chamber G, so that when either port o or CZ is in register with the port Ct then it is also in register with the port c and Athe several ports e in the valve-chamber open into a distributing-chamber I, connected by a pipe J with the. motive-agent supply. It is understoodthat the sets of ports c and dare arranged at angles to each other corresponding to the Yangles in which the several crankarms E E E2 are set relatively to each other, so that the several cylinders take steam successively to insure a ruiming of the engine by the succeeding impulses given to the pistons C C' C2.

The valve-stem Hl of the valve H extends through a suitable stuffing-box G to the outside of the valve-chamber G, and on the outer portion of said stein-H is arranged a key H2, engaging a corresponding groove in the hub K' of a gear-wheel K, mounted to turn lwith its hub in a bracket Kgand held against longitudinalmovementtherein. Thegear-wheel K is in-mesh with an intermediate gear-wheel L in mesh with a gear-wheel L', secured on the main driving-shaft F, so that the rotary motion of the latter causes a continuous rotary movement of the valve'H to ybring the several ports c or d successively in register with the ports a and b.

ln order to reverse the engine, it is necessary to move the valve H in a longitudinal direction, as previouslyexplained, and for this purpose the outer end of the stem His provided with a shifting collar N, having a pin N engaging an elongated slot O in a shifting lever O under the control of the operator.

When the several parts are in the position illustrated in Fig. 2, then the motive agent from the distributing-chamber I passes successively by way of the ports c c a into the cylinders A A A2 to give successive impulses to the pistons C C' C2. The ports c are cut ott from the ports a @previous to the pistons opening the exhaust-ports b, and as the gearing L', L, and K is so arranged as to impart one revolution to the valve and tWo revolutions to the shaft F it is evident that the pistons complete their return stroke previous to the ports c again moving in register with the ports a and e. When the pistons move into a lowermost position, they open the eX- hanst-ports h, so as to allow the exhaust motive agent to pass into the casing Band from the latter by the outlets B to the outer air.

"When it is desired to reverse the engine, the operator simply swings the lever O in the direction ot' the arrow a', so as to move the ports c out of register with the ports a e and to move the ports CZ in register wit-h the said ports de. The motive agent passes from the distributing-chamberI through the ports e d a successively into the cylinders A A' A2 to give successive impulses to the pistons C C C2, but in a reverse order to turn the shaft F in an opposite direction.

From the foregoing it is evident that the engine is composed of but comparatively few parts, not liable to get out of order, and the engine can be conveniently and quickly reversed by the operator whenever desired.

An engine of this class is especially serviceable as a marine engine for small Vessels, such as yachts and the like.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentw l. A reversible engine, comprising a cylinder having an inlet-port and an exhaustport, a piston reciprocating in said cylinder and controlling the opening and closing of said eXhaust-port,a valve-chamber into-Which opens said inlet-port, the chamber having a port diametrically opposite said inlet-port of the cylinder and in communication with a motive-agent supply, a valve mounted to turn and to slide in said valve-chamber and having spaced diametrical ports standing at right angles to one another, means for rotating the valve in one direction from the engin e-shaft, and manually-controlled means Afor sliding the valve in said chamber, to bring either valve-port in register with said inlet-port and said valve-chamber port, as set forth.

2. A reversible engine, comprising a plurality of lcylinders each having an inlet-port and an exhaust-port, pistons reciprocating in said cylinders and controlling the opening and closing of said exhaust-ports, a valvechamber into which open said inlet-ports and having ports diametrically opposite said inletports of the cylinders, a distributingchamber into which open said valve-chamber ports, the distributing-chamber being connected with a motive-agent supply, a valve mounted to turn and to slide in said valvechamber, and having sets of ports, of which the ports in each set are spaced apart and disposed approximately at right angles to one another, said sets of ports being adapted to register successively with said'cylinder inlet-ports and the valve-chamber ports, means for rotating said valve from the engine-shaft, and manually-controlled means for sliding the valve lengthwise in said valve-chamber,

to bring one port in each set of ports in register with the cylinder and valve-chamber ports, substantially as shown and described.

3. In a reversing engine, the combination of a cylinder having an inlet-port at one end and an exhaust-port in its side wall, a piston, means for reciprocating the piston in the cylinder, said piston opening and' closing the exhaust-port as itis reciprocated, a Valve-chainber at one end of the cylinder and having a port directly opposite the inlet-port ofthe cylder, and in communication with the motiveagent supply, a cylindrical valve mounted to turn and slide in the chamber, and provided with ports approximately at right angles with each other, means for rotating the valve from the piston-operating means, and means for sliding the valve, substantially as described.

4. In a reversing engine, the combination of a plurality of cylinders, each having an inlet-port and exhaust-port, pistons inv the cylinders and opening and closing the exhaustport-s, a driving-shaft having cranks standing at angles to each other and to which cranks the pistons are connected, a valvechamber into which the inlet-ports of the cylinders open, said chamber having ports directly opposite the inlet-ports of the cylinder and in communication with the motiveagent supply, a cylindrical valve mounted to slide and turn in the said chamber and provided with sets of ports, the ports of each set being approximately at right angles to each other, and the sets of ports being` arranged at angles to each other corresponding to the angles of the cranks of the driving-shaft, means for rotating the valve from the drivin g-shaft, and a lever for sliding said valve, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.-

HERMAN BRADNER OGDEN.

Witnesses:

PAULINE F. OGDEN, ANNA OGDEN.

IOO 

